Cleveland Controls NS2-0306-00 Pressure Switch

For HVACR contractors and facility technicians requiring high-precision airflow monitoring, the Cleveland Controls NS2-0306-00 Pressure Switch is the industry-standard OEM solution for verifying inducer fan operation and combustion safety. This factory-calibrated air pressure sensing switch is set to actuate at 0.37" w.c., providing critical feedback for furnace, boiler, and rooftop unit control boards. Featuring a glass-filled polycarbonate housing, the NS2-0306-00 offers exceptional stability across a wide operating temperature range from -40°F to 190°F. As the direct replacement for RSS-495-306, this unit facilitates a seamless drop-in installation with its included mounting bracket and 90-degree 1/4-inch quick-connect terminals. The dual-port design uses color-coded connectors—black for positive (P1) and gray for negative (P2) inlets—supporting positive, negative, or differential pressure sensing applications. Designed for maximum reliability in high-cycle environments, this 0.37" WC diaphragm switch ensures systems remain compliant with modern safety protocols while minimizing nuisance lockout events.

• Precise 0.37" W.C. Set Point: Factory-calibrated to maintain tight tolerances and ensure accurate inducer fan proving.
• Rugged Polycarbonate Body: Contaminant-free construction protects the internal snap-acting switch from harsh mechanical room environments.
• Drop-In Compatibility: Engineered as a functional and dimensional replacement for RSS-495-306 to reduce field labor time.
• Versatile Application: Capable of sensing positive, negative, or differential pressure in air and combustion byproducts.
• Reliable Electrical Interface: Standard silver contacts rated for 1/10 HP @ 120-277 VAC ensure compatibility with diverse furnace control circuits.

Is the Cleveland Controls NS2-0306-00 adjustable in the field?

No, this model is a factory-calibrated, non-adjustable unit set at 0.37" w.c. for safety-critical airflow verification. If you require an adjustable range, please verify the specific requirements of your equipment before installation.

How do I connect the pressure lines to the P1 and P2 ports?

The black port (P1) is the high/positive inlet, while the gray port (P2) is the low/negative inlet. For differential sensing, connect the higher pressure source to P1 and the lower pressure/vacuum source to P2.

Will this switch work with both 24V and 120V systems?

Yes, the internal switch is rated for pilot duty at 24 VAC and 125 VA at 120 VAC, making it suitable for standard residential and commercial HVAC control voltages.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.